[Bug] Using flink datagen to create complex nested type data sink fail

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/incubator-paimon/issues) and found nothing similar.

### Paimon version

0.5.0

### Compute Engine

flink 1.17.1

### Minimal reproduce step

[create.txt](https://github.com/apache/incubator-paimon/files/13172347/create.txt)

### What doesn't meet your expectations?

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Start by reproducing the failure from the attached create.txt with Paimon 0.5.0 and Flink 1.17.1, then compare the sink error and output with the screenshots. Trace the nested-type handling in the Flink sink and add a regression test once the failing path is identified; done means complex nested datagen records sink successfully.

Written by the indexing model from the issue text.